천재

Dorsal interossei

(of foot)

Proximal attachment(근위부)

Four bipennate muscles, each arising by two heads from the sides of the adjacent metatarsal bones.

(네개의 우상근), 중족골 인접한 곳 옆쪽에 있는 각각 두개의 머리로 부터 시작된다네요)

Distal attachment(원위부)

Bases of the proximal phalanges and the dorsal digital expansions of the medial side of the second toe and lateral sides of the second to fourth toes.(p.p의 기저부와  dorsal digital expansion은

2번째 발가락 안쪽과, 2-4번째  발가락 바깥쪽에 붙는다네)

Primary action

1. Abduction of the second to fourth toes (2-4번째 발가락의 외전)-벌리기

Agonists: none

Antagonists: plantar interossei

Extensor digitorum longus assists with abduction of the second to fourth toes (away from the axis of the second toe).

2. Flexion of the four lateral toes at the metatarsophalangeal joints 

(바깥쪽 4개의 발가락 mpt joint의 굴곡 ) 

Agonists: flexor digitorum longus, flexor digitorum brevis, flexor digiti minimi

Antagonists: extensor digitorum longus and extensor digitorum brevis

별루 안중요함↓

Secondary actions

3. Assists with extension of the four lateral toes at the proximal interphalangeal joints

( 가쪽의 4개의 발가락 pip joint 의 신전을 도완준다)

Agonists: extensor digitorum longus and extensor digitorum brevis

Antagonists: flexor digitorum longus and flexor digitorum brevis

Lumbricals and plantar interossei also assist with extension of the four lateral toes at the proximal interphalangeal joints (during flexion of the metatarsophalangeal joints).

4. Assists with extension of the lateral four toes at the distal interphalangeal joints (가쪽의 네개의 발가락의 dip joint의  신전을 도움)

Agonist: extensor digitorum longus

Antagonist: flexor digitorum longus

Lumbricals and plantar interossei also assist with extension of the lateral four toes at the distal interphalangeal joints (during flexion of the metatarsophalangeal joints).

(충양근과 저측골간근또한 신전할때 같이 도운답니다.)

Common injuries/pathologies

Muscle spasm.